<%

	String signature = request.getParameter( "signature" );
	String timestamp = request.getParameter( "timestamp" );
	String nonce = request.getParameter( "nonce" );
	String echostr = request.getParameter( "echostr" );

	System.out.println( "signature=" + signature );
	System.out.println( "timestamp=" + timestamp );
	System.out.println( "nonce=" + nonce );
	System.out.println( "echostr=" + echostr );

	out.println( echostr );
%>